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Communication device, and electronic device comprising same

a communication device and electronic device technology, applied in the direction of logic circuits, logic circuit coupling/interface arrangements, pulse techniques, etc., can solve the problems of high probability of error occurring and inability to achieve voltage levels of driving power

Active Publication Date: 2022-02-17
SAMSUNG ELECTRONICS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

This patent describes a communication device that allows for control signals to be transferred between two electronic devices using a single field effect transistor. The device generates a transmission signal based on a control signal from a main processor and sends it to a sub processor. The sub processor then generates a reception signal based on the control signal it received and sends it back to the main processor. This allows for seamless control and communication between the two devices.

Problems solved by technology

However, when performing communication using the above-described circuit, because a transmission circuit transmitting a signal to the outside and a reception circuit receiving a signal from the outside cannot be designed to have a symmetrical structure, there is the problem of a high likelihood of an error occurring when designing a circuit, the problem of power being consumed as a result of standby power being generated, the problem of communication between processors with different voltage levels of driving power not being possible, and the problem of having to change a configuration of the circuit to vary the communication speed.

Method used

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  • Communication device, and electronic device comprising same
  • Communication device, and electronic device comprising same
  • Communication device, and electronic device comprising same

Examples

Experimental program
Comparison scheme
Effect test

first embodiment

[0085]FIG. 6 is a circuit diagram of a transmission circuit and a reception circuit according to a

[0086]Referring to FIG. 6, the first transmission circuit 131 of the first communication device 130 may include a first FET Q1, pull-up resistances R1 and R2 and a first LPF 135. In addition, the second reception circuit 141 of the second communication device 140 may include a second FET Q2, pull-up resistances R5 and R6, and a second LPF 145.

[0087]The first communication device 130 and the second communication device 140 may be designed so as to transmit and receive the high signal as a default even when there is no data transfer. This is based on the basic feature of the above-described UART communication.

[0088]Then, the operation of the first transmission circuit 131 and the second reception circuit 141 may be varied according to whether the input signal input to the first transmission circuit 131 is a high signal or a low signal.

[0089]Below, the operation of the first transmission c...

second embodiment

[0117]FIG. 7 is a circuit diagram of a transmission circuit and a reception circuit according to a

[0118]Referring to FIG. 7, the first transmission circuit 131 and the second reception circuit 141 may further include resistances R7 and R8 and TVS diodes D1 and D2.

[0119]The gate of the first FET Q1 and the resistance R7 connected to the first driving power and the gate of the second FET Q2 and the resistance R8 to be connected to the second driving power may prevent the destruction of element which may be generated by applying a sudden voltage to the gate of each FET.

[0120]The TVS diodes D1 and D2 may be connected to the output stage of the first transmission circuit 131 and the input stage of the second reception circuit 141. Then, the TVS diodes D1 and D2 may prevent an electrostatic discharge (ESD) which is temporarily generated by the signal input to each circuit.

[0121]FIG. 8 is a diagram illustrating an operation of a low pass filter (LPF) circuit according to an embodiment of t...

third embodiment

[0184]FIG. 11 is a circuit diagram illustrating a level shift according to a

[0185]Referring to FIG. 11, the operation of the first transmission circuit 131 and the second reception circuit 141 in case the second processor 120 operates at a voltage level greater than the first processor 110, and the plurality of power cannot be used in the first transmission circuit 131 may be confirmed.

[0186]The case of FIGS. 9 and 10 described above assume that the first transmission circuit 131 or the second reception circuit 141 are able to use the plurality of power. However, there may be a case where the first transmission circuit 131 or the second reception circuit 141 is not able to use the plurality of power at an actual implementation due to the type of the electronic device, the limitation of the related components, or the like.

[0187]The operation of the first transmission circuit 131 and the second reception circuit 141 in case the first processor 110 operates at a voltage level greater t...

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PUM

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Abstract

A communication device is disclosed. The disclosed communication device comprises: a transmission circuit for generating a transmission signal by using a first field effect transistor (FET) and a signal inputted from a first control circuit, and transmitting the transmission signal to a second control circuit; and a reception circuit for generating a reception signal by using a second field effect transistor (FET) and a signal received from the second control circuit, and outputting the reception signal to the first control circuit.

Description

CROSS-REFERENCE TO RELATED APPLICATIONS[0001]This application is a 371 of International Application No. PCT / KR2019 / 011366 filed on Sep. 4, 2019, which claims priority to Korean Patent Application No. 10-2018-0109997 filed on Sep. 14, 2018, the disclosures of which are herein incorporated by reference in their entirety.BACKGROUND1. Field[0002]The disclosure relates to a communication device and an electronic device comprising the same. More particularly, the disclosure relates to a communication device which transmits and receives a signal by using a field effect transistor (FET) when communicating and an electronic device comprising the same.2. Description of Related Art[0003]Electronic devices such as an air conditioner, a washer, or the like may perform communication between a plurality of processors included therein by using an asynchronous communication method such as a UART.[0004]Recently, communication has been performed by using a circuit comprised of only a resistance for as...

Claims

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Application Information

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Patent Type & Authority Applications(United States)
IPC IPC(8): H03K19/0185
CPCH03K19/018507H03K19/017509H03K19/01806H03K19/018592H03K19/0185H03K19/0013
Inventor YU, ODOBYEON, SUNGHOONKIM, HWASUNGJO, SUHOHA, JONGHUN
Owner SAMSUNG ELECTRONICS CO LTD